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  <title>Checking for simple image layer optimisation</title>
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    img {
      float: left;
      width: 150px;
      height: 150px;
    }
    p {
      clear: both;
      margin: 1em 2em;
      height: 180px;
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    img {
      transform: rotate3d(0, 0, 1, 0);
    }
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  <h1>Image optimisation in layers</h1>

  <p style="height: auto">
    In order to run this test you should enable the debugging options that indicate
    what type of compositing layer is being used.
  </p>
  
<pre>
defaults write com.apple.Safari WebCoreLayerRepaintCounter -bool yes
defaults write com.apple.Safari WebCoreLayerBorders -bool yes
</pre>
  
  <p style="height: auto">
    Directly composited image layers will have a yellow border and no repaint counter.
  </p>

  <p>
    <img src="resources/simple_image.png">
    Basic image - no style - can be directly composited
  </p>

  <p>
    <img src="resources/simple_image.png" style="border: 5px solid blue;">
    5px blue border - can NOT be directly composited
  </p>

  <p>
    <img src="resources/simple_image.png" style="margin: 10px 20px;">
    margin - can NOT be directly composited
  </p>

  <p>
    <img src="resources/simple_image.png" style="background-color: grey;">
    solid background - can be directly composited
  </p>

  <p>
    <img src="resources/simple_image.png" style="background: orange url(resources/simple_image.png) -50px -50px;">
    background image - can NOT be directly composited
  </p>

  <p>
    <img src="resources/simple_image.png" style="transform: rotate3d(0, 0, 1, 10deg);">
    rotated but otherwise no style - can be directly composited
  </p>




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